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Fundamentals
of coding
Yeah, It's really true!

We will use Ruby in our examples.

Because...
10.times { puts "Hello world!" }
class HelloWorldApp {
public static void main(String[] args) {
for(int i = 0; i < 10; i++) {
System.out.println("Hello World");
}
}
}

Important question.
Why is coding so difficult?

Important question.
Why is coding so difficult?
In fact, it's not!

The start of a new day, in Ruby.
if alarm.is_ringing? # Asking alarm if it is ringing
self.wake_up() # Waking up
self.do_gymnastics(1.minute)
if self.need_to_go? # Asking yourself.
car.start_engine()
if self.saw(stopSign) # One more conditional
self.stop_car()
end
end
end

Nouns vs Verbs.
Nouns are objects.
Nouns can do things.
The verb is called a method or function.
The verb actually do things.

God creating human beings.
Now using blueprints (classes).

Classes.
class Human
def initialize(name, intelligence)
@name = name
@intelligence = intelligence
end
end
adam = Human.new( "Adam", 10 )
eve = Human.new( "Eve", 9 )
3000000000.times do | i |
Human.new( "Eve #" + i.to_s, rand(100) )
end

Inheritance.
class Woman < Human
attr_accessor :surname
def gossip()
@intelligence = @intelligence + 1
end
end
class Man < Human
def gossip()
@intelligence = @intelligence - 10
end
end

Encapsulation.
class Woman < Human
def gossip()
end
end
class Man < Human
def gossip()
end
end

Polymorphism.
class Woman < Human
def gossip()
end
end
class Man < Human
def gossip()
end
end

Object Oriented Programming at a
glance.
Together:
�� Encapsulation
�� Inheritance
�� Polymorphism
make up the fundament of OOP.

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Fundamentals of coding

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Fundamentals of coding